---
id: 5d822fd413a79914d39e990c
title: Part 68
challengeType: 0
isHidden: true
---
## Description
Create a new variable called `--window-color4` in `:root` and give it a value of `#8cb3d9`. This will be the secondary color for the last background building.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: const rootStyle = code.match(/:root\s*{[\s\S]+?[^}]}/g)[0]; assert(/--window-color4\s*:\s*#8cb3d9\s*(;|})/g.test(rootStyle));
```
## Challenge Seed
```html
freeCodeCamp Skyline Project
```